Electronic device in which an electronic component is mounted on a main board

ABSTRACT

There is provided an electronic device. The electronic device includes: a main board formed with a cut out and comprising first and second surfaces facing each other; and an electronic component comprising a sub board and a casing and connected to the main board. A part of the electronic component is accommodated in the cut out of the main board across the first and second surfaces of the main board. The sub board and the main board are spaced from each other without overlap.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority from Korean Patent Application No.10-2008-0072786, filed on Jul. 25, 2008 in the Korean IntellectualProperty Office, the disclosure of which is incorporated herein byreference.

BACKGROUND OF INVENTION

1. Field of Invention

Devices consistent with the present invention relate to an electronicdevice, and more particularly, to an electronic device in which anelectronic component is mounted on a main board.

2. Description of Related Art

Recently, an electronic device such as a television tends to be slimmed.However, such an electronic device typically has a variety of boards anda plurality of electronic components mounted on the boards, which causesa limit to slimming.

SUMMARY OF INVENTION

The present invention provides an electronic device including: a mainboard formed with a cut out, and first and second surfaces that face inopposite directions; and an electronic component including a sub boardand a casing that are connected to the main board wherein part of theelectronic component is accommodated in the cut out of the main boardacross the first and second surfaces of the main board, and the subboard and the main board being spaced from each other without overlap.

The casing may include: a first casing accommodating the sub board; anda second casing extending from the first casing, the second casing beingcoupled to the main board.

The first casing may be spaced from the main board.

The main board may be formed with a thru hole adjacent to the cut out,and the second casing may include: an extending part connected to thefirst casing and extending in parallel to the first surface of the mainboard; and a bent part bent from the extending part towards the mainboard and inserting into the thru hole.

At least a part of the first casing and the second casing may beintegrally formed.

The first casing may have a flat box shape, and the electronic componentmay be accommodated in the cut out so that a thickness of the firstcasing crosses the first and second surfaces of the main board.

The first casing may include: side casing members integrally formed witheach other and surrounding four sides of the sub board; and top andbottom casing members each covering top and bottom surfaces of the subboard.

The second casing may be formed integrally with the side casing membersof the first casing.

The electronic component may further include a jack protruding from thefirst casing.

The first casing may have an elongated shape, the jack may be protrudedfrom a planar surface of the first casing in a thickness direction ofthe first casing, and the second casing may extend in a lengthwisedirection of the first casing at each corner part of the first casing.

The first casing may have an elongated shape, the jack may be protrudedfrom a short side wall of the first casing in a lengthwise direction ofthe first casing, and the second casing may extend in a widthwisedirection of the first casing at each corner of the first casing.

The first casing may have an elongated shape, the jack may be protrudedfrom a short side wall of the first casing in a lengthwise direction ofthe first casing, and the cut out may be formed at a side edge of themain board.

The electronic device may further include: a display panel; and frontand rear casings accommodating the display panel. Here, the main boardmay be positioned between the display panel and the rear casing, and theelectronic component may include a tuner.

A part of the jack may be exposed outside of the rear casing.

The present invention also provides an electronic device including: afront casing; a rear casing coupled with the front casing; a displaypanel positioned between the front casing and the rear casing; a mainboard positioned between the display panel and the rear casing andformed with a cut out; and a tuner coupled to the main board andcomprising a sub board and a casing. Here, the casing of the tuner mayinclude: a first casing positioned in the cut out and surrounding thesub board; and a second casing extending from the first casing andcoupled to the main board.

The main board may include first and second surfaces facing each other,the first casing being accommodated in the cut out across the first andsecond surfaces of the main board.

The sub board and the main board may be spaced from each other withoutoverlap.

The main board may be formed with a thru hole, and at least a part ofthe second casing may be inserted into the thru hole of the main board.

The second casing may include: an extending part extending from thefirst casing in parallel to a planar surface of the main board; and abent part bent from the extending part towards the main board andinserting into the thru hole of the main board.

The tuner may further include a jack protruding from the first casing, apart of the jack being exposed outside of the rear casing.

BRIEF DESCRIPTION OF DRAWINGS

The present invention will become apparent and more readily appreciatedfrom the following description of the exemplary embodiments, taken inconjunction with the accompanying drawings, in which:

FIG. 1 is an exploded perspective view illustrating an electronic deviceaccording to a first exemplary embodiment of the present invention;

FIG. 2 is an enlarged view of an ‘A’ part in FIG. 1;

FIG. 3 is an exploded perspective view of the ‘A’ part in FIG. 2;

FIG. 4 is an exploded perspective view illustrating a tuner in theelectronic device according to the first exemplary embodiment of thepresent invention;

FIG. 5 is a section view taken along line V-V in FIG. 2;

FIG. 6 is a section view taken along line VI-VI in FIG. 2;

FIG. 7 is an exploded perspective view illustrating a main part of anelectronic device according to a second exemplary embodiment of thepresent invention;

FIG. 8 is an exploded perspective view illustrating a main part of anelectronic device according to a third exemplary embodiment of thepresent invention; and

FIG. 9 is an exploded perspective view illustrating a tuner in theelectronic device according to the third exemplary embodiment of thepresent invention.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

Reference will now be made in detail to the embodiments of the presentinvention, examples of which are illustrated in the accompanyingdrawings, wherein like reference numerals refer to like elementsthroughout. The exemplary embodiments are described below so as toexplain the present invention by referring to the figures. Repetitivedescription with respect to like elements of different embodiments maybe omitted for the convenience of clarity.

Hereinafter, a television and a tuner are exemplified as an electronicdevice and an electronic component, respectively, but the presentinvention may be applied to any other electronic device having aconfiguration in which an electronic component is mounted to a mainboard.

An electronic device according to a first exemplary embodiment of thepresent invention will be described with reference to FIGS. 1 through 6.

Referring to FIG. 1, a television 1 includes a front casing 10, a rearcasing 20, a display panel 30, a main board 40 and a tuner 50. Althoughnot shown, the television 1 may further include a support contacting aninstallation surface such as a wall or a floor. The support may beintegrally formed with the casings 10 and 20.

Between the front casing 10 and the rear casing 20, which are assembledto each other, accommodated the display panel 30, the main board 40, andthe tuner 50. The front casing 10 is formed with an opening 11, throughwhich a front surface part of the display panel 30 is exposed outside.The rear casing 20 is formed with an exposure hole 21, through which apart of the tuner 50 is exposed outside.

The display panel 30 has a flat panel shape and provides a displayscreen. The display panel 30 may include a PDP (plasma display panel),an LCD (liquid display panel), an OLED (organic light emitting diodepanel), or the like. In the case of the LCD, the display panel 30includes a back light unit.

The main board 40 also has a flat panel shape and is smaller in sizethan the display panel 30. The main board 40 is mounted with variouselectronic components such as the tuner 50. The main board 40 receives avideo signal from the outside, processes the video signal, and providesthe processed video signal to the display panel 30.

The tuner 50 is mounted on the main board 40, and a part thereof isexposed to the outside through the exposure hole 21, as described above.

FIG. 2 is an enlarged view of an ‘A’ part in FIG. 1. The main board 40is formed with a cut out 41 (see FIG. 3). The cut out 41 may have anelongated rectangular shape. A part of the tuner 50 is positioned insidethe cut out 41, and another part of the tuner 50 is connected to themain board 40 around the cut out 41.

The main board 40 and the tuner 50 will be described in more detailreferring to FIG. 3.

The main board 40 has a first surface 40 a facing the rear casing 20 anda second surface 40 b (see FIG. 5) facing the display panel 30. The mainboard 40 is formed with a plurality of, for example, four thru holes 42and a multiplicity of connection pin pads 43 around the cut out 41.

The thru holes 42 are arranged adjacent to opposite short sides of thecut out 41, and the connection pin pads 43 are arranged adjacent to along side of the cut out 41.

The tuner 50 includes a first casing 51, a second casing 52, a jack 54,and connection pins 551, which are all exposed to the outside of thetuner 50.

The first casing 51 has an elongated and flat rectangular box shape andis accommodated in the cut out 41. The first casing 51 has a length d1and a width d3 each shorter than a length d2 and a width d4 of the cutout 41.

The second casing 52 extends out of the first casing 51 in a lengthwisedirection of the first casing 51. The second casing 52 includes anextending part 52 a extending in parallel with a planar surface of themain board 40, and a bent part 52 b bent from the extending part 52 atowards the main board 40. The bent part 52 b inserts into the thruholes 42 of the main board 40 to couple the tuner 50 to the main board40.

The jack 54 is used for connection with an external element such as acable and is protruded from the first casing 51 towards the rear casing20.

The connection pins 551 are protruded outside from the lengthwisesurface of the first casing 51. The connection pins 551 are electricallyconnected to the connection pin pads 43 of the main board 40, andtransmit a video signal which is received from the outside by the tuner50 to the main board 40.

Referring to FIG. 4, the tuner 50 includes the casings 51 and 52, a subboard 53, the jack 54 and a connection pin unit 55 including theconnection pins 551. The casings 51 and 52, the jack 54 and theconnection pins 551 have the configurations as described above. Theconnection pin unit 55 is electrically connected to the sub board 53through the connection pins 551.

More specifically, the first casing 51 may be made of metal, and mayinterrupt electromagnetic waves generated in the sub board 53.

The first casing 51 includes a top casing member 511 facing the rearcasing 20, a bottom casing member 512 opposite to the top casing 511 andfacing the display panel 30, and side casing members 513 a, 513 b, 513c, 513 d and 513 e.

The top and bottom casing members 511 and 512 form a top surface and abottom surface of the first casing 51, respectively, and the side casingmembers 513 a through 513 e form four side surfaces of the first casing51, so as to accommodate the sub board 53 therein. The top and bottomcasing members 511 and 512 are arranged approximately in parallel to thefirst and second surfaces 40 a and 40 b of the main board 40.

The first and second side casing members 513 a and 513 b are opposite toeach other and extend in a lengthwise direction of the first casing 51.The second side casing member 513 b has a configuration in which a partthereof is removed for connection of the connection pin unit 55, whichis different in shape from the first side casing member 513 a.

The third and fourth side casing members 513 c and 513 d are opposite toeach other, and extends in a widthwise direction of the first casing 51.That is, the third and fourth side casing members 513 c and 513 d areshorter in length than the first and second side casing members 513 aand 513 b.

The connection casing member 513 e connects the first to fourth sidecasing members 513 a to 513 d of the first casing 51 at four cornersthereof That is, the first to fourth side casing members 513 a to 513 dare integrally formed with each other by the connection casing member513 e.

The second casings 52 respectively extend from opposite end parts of thefirst and second side casing members 513 a and 513 b in a lengthwisedirection of the first casing 5 1. In this respect, the first and secondside casing members 513 a and 513 b are formed integrally with thesecond casings 52, respectively.

The side casing members 513 a to 513 e, which are in an unfolded statein FIG. 4 for an exemplary description, are in practice folded to formfour side surfaces of the first casing 51. Here, the side casing members513 a to 513 d are folded in arrow directions.

The sub board 53 has an approximately rectangular flat panel shape andis surrounded by the top and bottom casing members 511 and 512 and theside casing members 513 a to 513 e. The sub board 53 is arrangedapproximately in parallel with the top and bottom casing members 511 and512.

In the above-described tuner 50, connection of the top and bottom casingmembers 511 and 512 and the side casing members 513 a to 513 e,connection of the sub board 53 and the first casing 51, connection ofthe connection pin unit 55 and the sub board 53, connection of the jack54 and the top casing member 511, and connection of the jack 54 and thesub board 53 may be accomplished by various known methods by thoseskilled in the art.

According to the present embodiment, a distance between the displaypanel 30 and the rear casing 20 can be reduced, which will be describedwith reference to FIGS. 5 and 6.

The first casing 51 of the tuner 50 is accommodated in the cut out 41 ofthe main board 40, and the second casing 52 of the tuner 50 is fixedlycoupled to the main board 40.

The first casing 51 is accommodated in the cut out 41 without contactwith the main board 40, and thus, the sub board 53 is also spaced fromthe main board 40 so that the sub board 53 and the main board 40 do notoverlap each other. The first casing 51 may contact the main board 40according to another embodiment, but even in this case, the sub board 53is spaced from the main board 40 without overlap.

As shown in FIG. 5, the first casing 51 of the tuner 50 is accommodatedin the cut out 41 so that a thickness of the first casing 51 crosses thefirst and second surfaces 40 a and 40 b of the main board 40. That is,the top casing member 511 of the first casing 51 is positioned betweenthe first surface 40 a of the main board 40 and the rear casing 20 andthe bottom casing member 512 thereof is positioned between the secondsurface 40 b of the main board 40 and the display panel 30.

As shown in FIG. 6, the bent parts 52 b of the second casings 52 areinserted into the thru holes 42 of the main board 40 so that an end partof each bent part 52 b is positioned between the main board 40 and thedisplay panel 30. The end part of each bent part 52 b and the secondsurface 40 b of the main board 40 are connected by soldering to fixedlycouple the tuner 50 to the main board 40.

A part of the jack 54 is, as shown in FIG. 5, exposed outside throughthe exposure hole 21 of the rear casing 20. A user may connect anexternal element such as a cable to the exposed jack 54. According tothe present embodiment, the connection of the jack 54 and the cable ismade in a thickness direction of the television 1.

Referring to FIG. 5, a distance d5 between the display panel 30 and therear casing 20 is the sum of a distance d6 between the display panel 30and the main board 40, a thickness d7 of the main board 40, and adistance d8 between the main board 40 and the rear casing 20.

The distance d6 between the display panel 30 and the main board 40 isdifficult to reduce below a certain value due to thicknesses ofelectronic components (not shown) mounted on the main board 40. Further,the thickness d7 of the main board 40 is difficult to reduce below acertain value. Also, a thickness d9 of the first casing is difficult toreduce below a certain value.

However, according to the present embodiment, since the first casing 51is accommodated in the cut out 41 of the main board 40, a part of thethickness d9 of the first casing 51 overlaps with the distance d6between the main board 40 and the display panel 30. Thus, the distanced8 between the main board 40 and the rear casing 20 for accommodatingthe first casing 51 can be reduced, and accordingly, the distance d5between the display panel 30 and the rear casing 20 can be also reduced.

With respect to the first exemplary embodiment of the present invention,various modifications may be provided. For example, the second casing 52of the tuner 50 may be separately provided and then coupled to the firstcasing 51, and may extend from the top and bottom casing members 511 and512. Further, the second casing 52 may be coupled to the first surface40 a by soldering without (passing through) the thru holes 42.

The position and number of the jack 54 may be varied according todifferent specifications of television models or different regulationsof countries, which will be described with reference to second and thirdexemplary embodiments of the present invention.

The second exemplary embodiment of the present invention will bedescribed referring to FIG. 7.

The second embodiment is different from the first embodiment in that thejack 54 is provided in a pair 54 a and 54 b, which protrudes towards therear casing 20, the second casing 52 of the tuner 50 extends in awidthwise direction of the first casing 51. The distance d5 between thedisplay panel 30 and the rear casing 20 may be reduced in the same wayas in the first embodiment.

The third exemplary embodiment of the present invention will bedescribed referring to FIGS. 8 and 9.

According to the third embodiment, the second casings 52 of the tuner 50respectively extend in a widthwise direction of the first casing 51,from opposite end parts of the third and fourth side casing members 513c and 513 d, like the second embodiment. The thru holes 42 of the mainboard 40 are arranged adjacent to opposite long sides of the cut out 41to correspond to the second casings 52.

Further, the jack 54 is protruded from the third side casing member 513c in a lengthwise direction of the first casing 51, unlike the first andsecond embodiments.

Furthermore, the cut out 41 of the main board 40 is provided at a sideedge of the main board 40, so that the jack 54 can be exposed through aside wall of the television 1. In this case, connection of the jack 54and a cable is made in a perpendicular direction to the connectionthereof in the first and second embodiments.

The distance d5 between the display panel 30 and the rear casing 20 maybe also reduced in the same way as in the first embodiment.

Although a few exemplary embodiments of the present invention have beenshown and described, it will be appreciated by those skilled in the artthat changes may be made in these embodiments without departing from theprinciples and spirit of the invention, the scope of which is defined inthe appended claims and their equivalents.

1. An electronic device comprising: a main board formed with a cut outand comprising a first surface and a second surface facing in oppositedirections and an electronic component comprising a sub board and acasing, and connected to the main board, wherein a part of theelectronic component is accommodated in the cut out of the main boardacross the first and the second surfaces of the main board, and the subboard and the main board are spaced from each other without overlap. 2.The electronic device according to claim 1, wherein the casingcomprises: a first casing accommodating the sub board; and a secondcasing extending from the first casing, the second casing being coupledto the main board.
 3. The electronic device according to claim 2,wherein the first casing is spaced from the main board.
 4. Theelectronic device according to claim 2, wherein the main board is formedwith a thru hole adjacent to the cut out, and the second casingcomprises: an extending part connected to the first casing and extendingin parallel to the first surface of the main board; and a bent part bentfrom the extending part towards the main board and inserting into thethru hole.
 5. The electronic device according to claim 2, wherein atleast a part of the first casing and the second casing are integrallyformed.
 6. The electronic device according to claim 2, wherein the firstcasing has a flat box shape, and the electronic component isaccommodated in the cut out so that a thickness of the first casingcrosses the first and the second surfaces of the main board.
 7. Theelectronic device according to claim 6, wherein the first casingcomprises: side casing members integrally formed with each other andsurrounding four sides of the sub board; and a top casing member and abottom casing member each covering a top surface and a bottom surface ofthe sub board.
 8. The electronic device according to claim 7, whereinthe second casing is formed integrally with the side casing members ofthe first casing.
 9. The electronic device according to claim 6, whereinthe electronic component further comprises at least one jack protrudingfrom the first casing.
 10. The electronic device according to claim 9,wherein the first casing has an elongated shape, at least one jack isprotruded from a planar surface of the first casing in a thicknessdirection of the first casing, and the second casing extends in alengthwise direction of the first casing at each corner part of thefirst casing.
 11. The electronic device according to claim 9, whereinthe first casing has an elongated shape, at least one jack is protrudedfrom a short side wall of the first casing in a lengthwise direction ofthe first casing, and the second casing extends in a widthwise directionof the first casing at each corner of the first casing.
 12. Theelectronic device according to claim 9, wherein the first casing has anelongated shape, at least one jack is protruded from a short side wallof the first casing in a lengthwise direction of the first casing, andthe cut out is formed at a side edge of the main board.
 13. Theelectronic device according to claim 9, further comprising: a displaypanel; and a front casing and a rear casing accommodating the displaypanel, wherein the main board is positioned between the display paneland the rear casing, and the electronic component comprises a tuner. 14.The electronic device according to claim 13, wherein a part of at leastone jack is exposed outside of the rear casing.
 15. An electronic devicecomprising: a front casing; a rear casing coupled with the front casing;a display panel positioned between the front casing and the rear casing;a main board positioned between the display panel and the rear casingand formed with a cut out; and a tuner coupled to the main board andcomprising a sub board and a tuner casing, the tuner casing comprising:a first casing positioned in the cut out and surrounding the sub board;and a second casing extending from the first casing and coupled to themain board.
 16. The electronic device according to claim 15, wherein themain board comprises a first surface and a second surface facing eachother, the first casing being accommodated in the cut out across thefirst and the second surfaces of the main board.
 17. The electronicdevice according to claim 16, wherein the sub board and the main boardare spaced from each other without overlap.
 18. The electronic deviceaccording to claim 15, wherein the main board is formed with a thruhole, and at least a part of the second casing is inserted into the thruhole of the main board.
 19. The electronic device according to claim 18,wherein the second casing comprises: an extending part extending fromthe first casing in parallel to a planar surface of the main board; anda bent part bent from the extending part towards the main board andinserting into the thru hole of the main board.
 20. The electronicdevice according to claim 15, wherein the tuner further comprises atleast one jack protruding from the first casing, a part of at least onejack being exposed outside of the rear casing.
 21. The electronic deviceaccording to claim 15, wherein the second casing is soldered to the mainboard.